Healthcare provider profile · identity verified

Willard B Denhouter, M.D.

Internal Medicine · PLYMOUTH, MI · NPI 1730152729

Profile state: partd only Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

We did not find matching Open Payments records for this doctor in 2025.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

There is no payer-company set available for this comparison.

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	949	258
Losartan Potassium	Losartan Potassium	823	209
Levothyroxine Sodium	Levothyroxine Sodium	780	195
Amlodipine Besylate	Amlodipine Besylate	587	172
Simvastatin	Simvastatin	510	138
Metoprolol Succinate	Metoprolol Succinate	505	135
Tamsulosin Hcl	Tamsulosin Hcl	453	127
Eliquis	Apixaban	416	103
Pantoprazole Sodium	Pantoprazole Sodium	388	120
Omeprazole	Omeprazole	364	101
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	308	81
Lisinopril	Lisinopril	288	92
Sertraline Hcl	Sertraline Hcl	283	75
Hydrochlorothiazide	Hydrochlorothiazide	268	75
Metformin Hcl Er	Metformin Hcl	266	75
Gabapentin	Gabapentin	259	86
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	251	58
Furosemide	Furosemide	249	79
Metoprolol Tartrate	Metoprolol Tartrate	241	64
Alendronate Sodium	Alendronate Sodium	240	71
Prednisone	Prednisone	221	130
Trazodone Hcl	Trazodone Hcl	202	56
Metformin Hcl	Metformin Hcl	191	55
Glimepiride	Glimepiride	188	45
Januvia	Sitagliptin Phosphate	187	48
Carvedilol	Carvedilol	184	44
Montelukast Sodium	Montelukast Sodium	182	61
Alprazolam	Alprazolam	174	70
Pioglitazone Hcl	Pioglitazone Hcl	172	48
Rosuvastatin Calcium	Rosuvastatin Calcium	166	38
Allopurinol	Allopurinol	164	46
Potassium Chloride	Potassium Chloride	154	42
Tramadol Hcl	Tramadol Hcl	146	48
Donepezil Hcl	Donepezil Hcl	139	39
Mirtazapine	Mirtazapine	137	37
Pravastatin Sodium	Pravastatin Sodium	134	29
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	129	32
Clopidogrel	Clopidogrel Bisulfate	126	41
Finasteride	Finasteride	125	39
Fluticasone Propionate	Fluticasone Propionate	123	53
Ozempic	Semaglutide	121	31
Quetiapine Fumarate	Quetiapine Fumarate	121	22
Albuterol Sulfate Hfa	Albuterol Sulfate	118	60
Baclofen	Baclofen	116	58
Ezetimibe	Ezetimibe	114	35
Atenolol	Atenolol	110	33
Meloxicam	Meloxicam	109	51
Azithromycin	Azithromycin	100	89
Ibuprofen	Ibuprofen	98	65
Venlafaxine Hcl Er	Venlafaxine Hcl	91	22
Hydroxyzine Hcl	Hydroxyzine Hcl	88	43
Oxybutynin Chloride	Oxybutynin Chloride	87	29
Spironolactone	Spironolactone	86	30
Famotidine	Famotidine	81	26
Xarelto	Rivaroxaban	81	23
Escitalopram Oxalate	Escitalopram Oxalate	80	20
Isosorbide Mononitrate Er	Isosorbide Mononitrate	80	20
Warfarin Sodium	Warfarin Sodium	73	17
Citalopram Hbr	Citalopram Hydrobromide	71	16
Amitriptyline Hcl	Amitriptyline Hcl	69	17
Buspirone Hcl	Buspirone Hcl	68	22
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	68	16
Methylprednisolone	Methylprednisolone	67	52
Ciprofloxacin Hcl	Ciprofloxacin Hcl	66	43
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	65	18
Ipratropium Bromide	Ipratropium Bromide	64	26
Celecoxib	Celecoxib	63	18
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	63	24
Peg-3350 And Electrolytes	Peg3350/Sod Sulf,bicarb,cl/Kcl	63	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	62	suppressed
Meclizine Hcl	Meclizine Hcl	61	32
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	60	46
Lorazepam	Lorazepam	58	18
Zolpidem Tartrate	Zolpidem Tartrate	57	18
Fenofibrate	Fenofibrate Nanocrystallized	55	13
Invokana	Canagliflozin	54	13
Jardiance	Empagliflozin	54	16
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	54	19
Rivastigmine	Rivastigmine	54	13
Duloxetine Hcl	Duloxetine Hcl	52	15
Hydralazine Hcl	Hydralazine Hcl	49	13
Amoxicillin	Amoxicillin	48	33
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	48	13
Bumetanide	Bumetanide	46	12
Hydrocortisone	Hydrocortisone	46	36
Pregabalin	Pregabalin	46	15
Nitroglycerin	Nitroglycerin	45	30
Cephalexin	Cephalexin	43	34
Chlorthalidone	Chlorthalidone	43	11
Dicyclomine Hcl	Dicyclomine Hcl	42	20
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	42	18
Bupropion Xl	Bupropion Hcl	40	12
Triamcinolone Acetonide	Triamcinolone Acetonide	40	33
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	39	14
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	38	suppressed
Myrbetriq	Mirabegron	38	15
Doxazosin Mesylate	Doxazosin Mesylate	37	suppressed
Acarbose	Acarbose	36	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	34	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	34	suppressed
Valsartan	Valsartan	34	suppressed
Acyclovir	Acyclovir	33	14
Midodrine Hcl	Midodrine Hcl	33	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	33	14
Verapamil Er	Verapamil Hcl	33	suppressed
Clonazepam	Clonazepam	32	11
Synthroid	Levothyroxine Sodium	32	11
Fentanyl	Fentanyl	31	suppressed
Glipizide	Glipizide	31	suppressed
Memantine Hcl	Memantine Hcl	31	suppressed
Paroxetine Hcl	Paroxetine Hcl	31	suppressed
Ondansetron Hcl	Ondansetron Hcl	30	24
Valacyclovir	Valacyclovir Hcl	30	15
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	29	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	29	suppressed
Nifedipine Er	Nifedipine	28	suppressed
Amiodarone Hcl	Amiodarone Hcl	27	suppressed
Irbesartan	Irbesartan	27	suppressed
Primidone	Primidone	27	suppressed
Clonidine Hcl	Clonidine Hcl	26	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	26	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	25	suppressed
Bupropion Hcl Sr	Bupropion Hcl	25	suppressed
Colchicine	Colchicine	25	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	24	suppressed
Repatha Sureclick	Evolocumab	24	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	23	suppressed
Nabumetone	Nabumetone	23	suppressed
Testosterone	Testosterone	23	suppressed
Clotrimazole	Clotrimazole	22	17
Symbicort	Budesonide/Formoterol Fumarate	22	suppressed
Lansoprazole	Lansoprazole	21	suppressed
Tadalafil	Tadalafil	21	suppressed
Clonidine	Clonidine	20	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	20	suppressed
Farxiga	Dapagliflozin Propanediol	20	suppressed
Gemfibrozil	Gemfibrozil	20	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	20	18
Acetaminophen-Codeine	Acetaminophen With Codeine	19	suppressed
Fenofibrate	Fenofibrate	19	suppressed
Metronidazole	Metronidazole	19	14
Paxlovid	Nirmatrelvir/Ritonavir	19	19
Cholestyramine Light	Cholestyramine	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	18	12
Klor-Con M20	Potassium Chloride	18	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	18	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	17	suppressed
Ibandronate Sodium	Ibandronate Sodium	17	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	17	suppressed
Ropinirole Hcl	Ropinirole Hcl	17	suppressed
Enalapril Maleate	Enalapril Maleate	16	suppressed
Levetiracetam	Levetiracetam	16	suppressed
Lidocaine	Lidocaine	16	suppressed
Prazosin Hcl	Prazosin Hcl	16	suppressed
Sucralfate	Sucralfate	16	suppressed
Tramadol Hcl-Acetaminophen	Tramadol Hcl/Acetaminophen	16	suppressed
Benazepril Hcl	Benazepril Hcl	15	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	15	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	15	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	15	suppressed
Diclofenac Sodium	Diclofenac Sodium	15	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	15	suppressed
Mirabegron Er	Mirabegron	15	suppressed
Propranolol Hcl Er	Propranolol Hcl	15	suppressed
Trulicity	Dulaglutide	15	suppressed
Diazepam	Diazepam	14	suppressed
Klor-Con M10	Potassium Chloride	14	suppressed
Metformin Er Osmotic	Metformin Hcl	14	suppressed
Neomycin-Polymyxin-Hydrocort	Neomycin/Polymyxin B/Hydrocort	14	14
Niacin Er	Niacin	14	suppressed
Potassium Citrate Er	Potassium Citrate	14	suppressed
Spiriva Handihaler	Tiotropium Bromide	14	suppressed
Topiramate	Topiramate	14	suppressed
Amlodipine-Atorvastatin	Amlodipine/Atorvastatin	13	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	13	suppressed
Linzess	Linaclotide	13	suppressed
Metolazone	Metolazone	13	suppressed
Morphine Sulfate Er	Morphine Sulfate	13	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	13	suppressed
Praluent Pen	Alirocumab	13	suppressed
Prevalite	Cholestyramine	13	suppressed
Raloxifene Hcl	Raloxifene Hcl	13	suppressed
Ranolazine Er	Ranolazine	13	suppressed
Clindamycin Hcl	Clindamycin Hcl	12	suppressed
Dutasteride	Dutasteride	12	suppressed
Jantoven	Warfarin Sodium	12	suppressed
Lovastatin	Lovastatin	12	suppressed
Mounjaro	Tirzepatide	12	suppressed
Ondansetron Odt	Ondansetron	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Tiotropium Bromide	Tiotropium Bromide	12	suppressed
Tradjenta	Linagliptin	12	suppressed
Armour Thyroid	Thyroid,pork	11	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	11	suppressed
Lamictal	Lamotrigine	11	suppressed
Rizatriptan	Rizatriptan Benzoate	11	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	11	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	11	suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
CMS Open Payments — General Payments	2025	2026-06-30	Original source
Medicare Part D Prescribers by Provider and Drug	2024	2026-05-06	Original source
NPPES Data Dissemination V2	current / reference data	2026-08-10	Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error